Binoculars

Zero-shot LLM-text detection (ICML 2024) by contrasting the perplexity of two related models (an "observer" and a "performer"): over 90% detection of machine text at a 0.01% false-positive rate with no training data from the target model. The standard open detector baseline, from Tom Goldstein's group with Abhimanyu Hans — pre-window preprint whose publication and adoption fall in window.